main {
    width: 80%;
}

.history_title {
    width: 100%;
    padding: 10px;
    font-size: 20px;
    font-weight: bold;
    margin: 10px 0 10px 0;
    border-bottom: 1px solid #ccc;
}

.table {
    text-align: center;
    font-size: smaller;
}

.table td ,
.table th{
    max-width: 200px;
    vertical-align: middle;
    text-align: center;
}